public static void main(String[] args) throws Exception { function(); function_01(); } /* * 闰年计算 * 高级的算法: 日历设置到指定年份的3月1日,add向前偏移1天,获取天数,29闰年 */ private static void function_01() { Calendar c = Calendar.getInstance(); c.set(2048, 2, 1); c.add(Calendar.DAY_OF_MONTH, -1); System.out.println(c.get(Calendar.DAY_OF_MONTH)); } private static void function() throws Exception { System.out.println("请输入生日日期 格式yyyy-MM-dd"); String birthdayStr = new Scanner(System.in).nextLine(); Date birthday = new SimpleDateFormat("yyyy-MM-dd").parse(birthdayStr); Date today = new Date(); long gap = today.getTime() - birthday.getTime(); System.out.println("活了" + gap / 1000 / 60 / 60 / 24 + "天"); }
Date类-Calendar类-小测验
猜你喜欢
转载自blog.csdn.net/Peter_Hao1015/article/details/80092568
今日推荐
周排行